Ultrasonic study of molecular interactions in binary mixtures of methyl acrylate with 1-alkanols (C4 to C10) at temperatures from (288.15 to 318.15) K

The ultrasonic speed, u of binary mixtures of methyl acrylate with 1-butanol, 1-hexanol, 1-octanol, and 1-decanol, including those of pure liquids, over the entire composition range was measured at temperatures (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15) K and at atmospheric pressure. From the experimental results, the isentropic compressibility, κs, intermolecular free length, Lf, acoustic impedance, Z, relative association, RA, molecular association MA, deviations in isentropic compressibility, Δκs, excess intermolecular free length, LfE, deviations in ultrasonic speed, Δu  , excess molar isentropic compressibility, Ks,mE, excess acoustic impedance, ZE have been calculated. The partial molar isentropic compressibility, K¯s,m,1 and K¯s,m,2, and excess partial molar isentropic compressibility, K¯s,m,1E and K¯s,m,2E over the whole composition range, partial molar isentropic compressibility, K¯s,m,1° and K¯s,m,2°, and excess partial molar isentropic compressibility, K¯s,m,1°E and K¯s,m,2°E of the components at infinite dilution have also been calculated. The variations of these derived parameters indicate the presence of specific interactions between methyl acrylate and 1-alkanol molecules, which follows the order: 1-butanol > 1-hexanol > 1-octanol > 1-decanol. The values of excess parameters are found dependent on the length of alkyl chain of 1-alkanol molecules.

► The study provide information on the interactions in (methyl acrylate + 1-alkanol) binary mixtures.
► Reports ultrasonic speed data of (methyl acrylate + 1-alkanol) mixtures.
► Provides information on nature and relative strength of interactions in these media.
► Correlates acoustical and thermodynamic properties with interactions in these mixtures.